chrome/browser/load_library_perf_test.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <stddef.h>
   6 #include <stdint.h>
   7
   8 #include "base/files/file_path.h"
   9 #include "base/files/file_util.h"
  10 #include "base/native_library.h"
  11 #include "base/path_service.h"
  12 #include "base/scoped_native_library.h"
  13 #include "base/strings/utf_string_conversions.h"
  14 #include "base/time/time.h"
  15 #include "build/build_config.h"
  16 #include "media/media_buildflags.h"
  17 #include "testing/gtest/include/gtest/gtest.h"
  18 #include "testing/perf/perf_result_reporter.h"
  19 #include "third_party/widevine/cdm/buildflags.h"
  20 #include "third_party/widevine/cdm/widevine_cdm_common.h"
  21
  22 #if BUILDFLAG(ENABLE_LIBRARY_CDMS)
  23 #include "media/cdm/cdm_paths.h"
  24 #endif
  25
  26 namespace {
  27
  28 #if BUILDFLAG(ENABLE_LIBRARY_CDMS)
  29
  30 constexpr char kMetricLibrarySizeBytes[] = "library_size";
  31 constexpr char kMetricTimeToLoadLibraryMs[] = "time_to_load_library";
  32
  33 perf_test::PerfResultReporter SetUpReporter(const std::string& story) {
  34   perf_test::PerfResultReporter reporter("", story);
  35   reporter.RegisterImportantMetric(kMetricLibrarySizeBytes, "bytes");
  36   reporter.RegisterImportantMetric(kMetricTimeToLoadLibraryMs, "ms");
  37   return reporter;
  38 }
  39
  40 // Measures the size (bytes) and time to load (sec) of a native library.
  41 // |library_relative_dir| is the relative path based on DIR_MODULE.
  42 void MeasureSizeAndTimeToLoadNativeLibrary(
  43     const base::FilePath& library_relative_dir,
  44     const base::FilePath& library_name) {
  45   base::FilePath output_dir;
  46   ASSERT_TRUE(base::PathService::Get(base::DIR_MODULE, &output_dir));
  47   output_dir = output_dir.Append(library_relative_dir);
  48   base::FilePath library_path = output_dir.Append(library_name);
  49   ASSERT_TRUE(base::PathExists(library_path)) << library_path.value();
  50
  51   int64_t size = 0;
  52   ASSERT_TRUE(base::GetFileSize(library_path, &size));
  53   auto reporter = SetUpReporter(library_name.AsUTF8Unsafe());
  54   reporter.AddResult(kMetricLibrarySizeBytes, static_cast<size_t>(size));
  55
  56   base::NativeLibraryLoadError error;
  57   base::TimeTicks start = base::TimeTicks::Now();
  58   base::NativeLibrary native_library =
  59       base::LoadNativeLibrary(library_path, &error);
  60   double delta = (base::TimeTicks::Now() - start).InMillisecondsF();
  61   ASSERT_TRUE(native_library) << "Error loading library: " << error.ToString();
  62   base::UnloadNativeLibrary(native_library);
  63   reporter.AddResult(kMetricTimeToLoadLibraryMs, delta);
  64 }
  65
  66 void MeasureSizeAndTimeToLoadCdm(const std::string& cdm_base_dir,
  67                                  const std::string& cdm_name) {
  68   MeasureSizeAndTimeToLoadNativeLibrary(
  69       media::GetPlatformSpecificDirectory(cdm_base_dir),
  70       base::FilePath::FromUTF8Unsafe(cdm_name));
  71 }
  72
  73 #endif  // BUILDFLAG(ENABLE_LIBRARY_CDMS)
  74
  75 }  // namespace
  76
  77 #if BUILDFLAG(ENABLE_LIBRARY_CDMS)
  78
  79 #if BUILDFLAG(ENABLE_WIDEVINE)
  80 TEST(LoadCDMPerfTest, Widevine) {
  81   MeasureSizeAndTimeToLoadCdm(
  82       kWidevineCdmBaseDirectory,
  83       base::GetNativeLibraryName(kWidevineCdmLibraryName));
  84 }
  85 #endif  // BUILDFLAG(ENABLE_WIDEVINE)
  86
  87 TEST(LoadCDMPerfTest, ExternalClearKey) {
  88   MeasureSizeAndTimeToLoadCdm(
  89       media::kClearKeyCdmBaseDirectory,
  90       base::GetLoadableModuleName(media::kClearKeyCdmLibraryName));
  91 }
  92
  93 #endif  // BUILDFLAG(ENABLE_LIBRARY_CDMS)